题目内容
（请给出正确答案）
What is the biggest problem with hydrogen-powered cars？
A．There is no cheap source of hydrogen.
B．There might be a safety problem in hydrogen production.
C．They may still be a cause of global warming.
D．They are not suitable for long-distance travel.
简答题官方参考答案
（由简答题聘请的专业题库老师提供的解答）
更多“What is the biggest problem with hydrogen-powered cars？A．There is no cheap source of hydro”相关的问题
What is the biggest problem in today's life？
A．Pollution.
B．Air pollution.
C．Nois
According to the passage, what kind of tomatoes will induce the biggest offense？
A．Red and soft.
B．Yellow and soft.
C．Green and hard.
D．Not mentioned.
What is the biggest challenge of the trip？
A．The Kombis are too old.
B．Language..
C．People may not enjoy the driving experience.
D．Finding a destination in busy city traffic.
What is the biggest challenge in bird flu control in Indonesia？
A．Shortage of medicines.
B．People"s close contact with sick people.
C．Shortage of doctors.
D．People"s close contact with chickens.
What will be the biggest problem with the big cities？
A．There are no jobs to find and no place to live in.
B．The newcomers stop coming in large numbers.
C．Good doctors decide to move out of the cities.
What's the biggest fear of older parents according to New York psychologist Joan Galst？
A．Approaching of death.
B．Slowing down of their pace of life.
C．Being laughed at by other people.
D．Being mistaken for grandparents.
A、planning for success
B、marketing before the launch
C、launching the new product
D、the biggest discount
What has been the biggest sticking point throughout the negotiations？
A．The issue of oil
B．The issue of federalism
C．The issue of trade
D．The issue of army
警告：系统检测到您的账号存在安全风险
为了保护您的账号安全，请在“简答题”公众号进行验证，点击“官网服务”-“账号验证”后输入验证码“”完成验证，验证成功后方可继续查看答案！
